359
M8.0-1055-013
01 Rev. 6/08
CYLINDERS
Cylinders
Tilt Cylinder Adjustment
1. Turn rod end on piston rod until the end of the rod
end is 24.5 mm (0.96 in) from the shoulder on the
piston rod. Hex jam nut is to be against the end of
the rod end (refer to Figure 15967). Repeat proce-
dure for the other tilt cylinder.
2. Connect both tilt cylinders to the mast with appro-
priate hardware. The date code on the rod end is
to face the mast channel and the large flat washer
is to be on the outboard side.
3. The truck must be empty and located on a surface
plate to make the following adjustments to the tilt
cylinder rod end.
4. Extend cylinders to full forward position. Refer to
Chart 1 - Degree of Tilt to determine correct degree
of forward tilt.
5. Loosen the hex jam nut to allow the piston rod to
be rotated using a 27 mm open end wrench on the
flats provided. Adjust the piston rods so that both
cylinders bottom out at the same time when the
mast is tilted forward.
6. Use an inclinometer to check the tilt of the mast on
the first stage. If the measured degree is not within
the ± 0.25° tolerance, rotate the piston rods until
the desired degree of tilt is within tolerance. (The
mast may need tilted back to allow clearance for
the wrench to turn the cylinder shaft.)
7. Once all adjustments are complete, tighten the hex
jam nut up against the end of the rod end and
torque hex jam nut to 339 ± 27 Nm (250 ± 20 ft lb).
8. Tilt mast to back until one of the tilt cylinder spac-
ers is snug and cannot be rotated freely. Do not tilt
back any further than this.
9. Use an inclinometer to check the tilt of the mast. If
the measured degree is not within the +0/-0.5° tol-
erance add retaining rings (Crown Part No.
060009-168) between the spacer and the cylinder
until desired degree of tilt is achieved. There may
now be a gap between the other spacer and cylin-
der. Measure the gap, and then tilt the mast for-
ward. Add retaining rings between the spacer and
cylinder so the gap is less than 1.59 mm
(0.0625 in).
Tilt Cylinder Shimming
1. Tilt mast back to its maximum position.
2. Refer to Figure 19830. On the side of the truck with
the tilt position assist assembly, measure the gap
(1) between the end cap (2) and the drive axle
mounting plate (3).
3. Use the Tilt Cylinder Spacing chart to determine
the type and quantity of spacers needed for the
measured gap.
Figure 15967
1 Rod End
2Hex Jam Nut
3Spacer
Chart 1 - Degree of Tilt
Tilt Cylinder
Assembly
Forward Tilt Backward Tilt
136589-053 5° 3°
136589-055 5° 5°
136589-103 10° 3°
136589-105 10° 5°
Figure 19830
Crown 2007 PF15682-13 Rev. 6/08
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